title: Factors affecting flexion gap tightness in cruciate-retaining total knee arthroplasty.
abstract: With the exception of flexion gap tightness, which is common in cruciate-retaining (CR) total knee arthroplasty (TKA), the risk factors of flexion gap tightness have not been described. This retrospective study characterized factors that are associated with flexion gap tightness in CR TKA. Data on 203 consecutive knees that underwent CR TKA were reviewed. The prevalence rate of flexion gap tightness was 21.1%. By logistic regression analysis after adjusting for age, preoperative flexion contracture, and referencing method used for femoral sizing, insufficient tibial slope remained a significant independent risk factor of flexion gap tightness. Although excessive tibial slope should be avoided, the findings of the present study demonstrate that the risk of flexion gap tightness can be reduced by increasing the tibial slope in CR TKA.
authors.affiliation: Department of Orthopaedic Surgery, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
authors.forename: Yong
authors.initials: Y
authors.lastname: In
authors.forename: Jung-Man
authors.initials: JM
authors.lastname: Kim
authors.forename: Young-Kyun
authors.initials: YK
authors.lastname: Woo
authors.forename: Nam-Yong
authors.initials: NY
authors.lastname: Choi
authors.forename: Jong-Min
authors.initials: JM
authors.lastname: Sohn
authors.forename: Hae-Seok
authors.initials: HS
authors.lastname: Koh
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016118:Anterior Cruciate Ligament / Q000502:physiology* / Q000601:surgery; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D001696:Biomechanical Phenomena; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000502:physiology* / Q000601:surgery*; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery; D016119:Posterior Cruciate Ligament / Q000502:physiology* / Q000601:surgery; D017755:Prosthesis Fitting; D016059:Range of Motion, Articular / Q000502:physiology*; D012189:Retrospective Studies